Kate Middleton wore the same Self Portrait dress as Paris Hilton

Kate Middleton is no stranger to British high street brands. In fact, the Duchess of Cambridge has been seen to champion the likes of Hobbs, Reiss, Zara and Topshop on many a royal occasion.

The premiere of A Street Cat Named Bob, however, was the first time Kate opted for trend-led, partywear brand Self Portrait. And we're loving this partnership.

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The problem with choosing to wear something 'off the rack', of course, is you can't guarantee you are the first famous person to wear it. And unfortunately for Kate, Paris Hilton had already beaten her to the mark with this particular white gown, having worn it to the amfAR Inspiration Gala last week. #Awks.

We love how Paris wore hers with a Tiara - it's almost like she KNEW Kate was going to copy her look.

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Self Portrait are probably best known for their cut-out, slinky evening wear dresses, which is exactly what Kate picked out for her night on the red carpet.

This could almost be a wedding dress - guaranteed, nowhere near as fancy as the one the Duchess of Cambridge actually wore when she married Wills - if it wasn't for the thigh-high split that we're sure will garner a few raised eyebrows from the queen.

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We think that it's just lovely to see the Duchess in a gown that is a bit more youthful and fun than some of her previous choices - and the fact that it just so happens to be one of our fave brands right now is a bonus.

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Kate teamed the white dress with matchy matchy accessories in a deep burgundy and wore simple pearl earrings with her wavy down 'do.

While the Duchess appeared to battle a little with the wind on the evening, it did give the dress a chance to really shine. Loving the pleated skirt in this snap...

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